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arm: Tell irq work about self IPI support

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ARM irq work IPI support depends on SMP support. That information is
partly known at early boottime. Lets implement
arch_irq_work_has_interrupt() accordingly.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Frederic Weisbecker 2014-08-16 18:47:53 +02:00
parent 3010279f0f
commit 09f6edd424
3 changed files with 12 additions and 2 deletions
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1
arch/arm/include/asm/Kbuild
View File

@ -11,7 +11,6 @@ generic-y += hash.h
generic-y += ioctl.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
generic-y += irq_work.h
generic-y += kdebug.h
generic-y += local.h
generic-y += local64.h

11
arch/arm/include/asm/irq_work.h Normal file
View File

@ -0,0 +1,11 @@
#ifndef __ASM_ARM_IRQ_WORK_H
#define __ASM_ARM_IRQ_WORK_H
#include <asm/smp_plat.h>
static inline bool arch_irq_work_has_interrupt(void)
{
return is_smp();
}
#endif /* _ASM_ARM_IRQ_WORK_H */

2
arch/arm/kernel/smp.c
View File

@ -503,7 +503,7 @@ void arch_send_call_function_single_ipi(int cpu)
#ifdef CONFIG_IRQ_WORK
void arch_irq_work_raise(void)
{
if (is_smp())
if (arch_irq_work_has_interrupt())
smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK);
}
#endif